EP2050517B1 - Procédé de traitement de matériau de sédiment d'eau ou de sol minéral contaminé - Google Patents
Procédé de traitement de matériau de sédiment d'eau ou de sol minéral contaminé Download PDFInfo
- Publication number
- EP2050517B1 EP2050517B1 EP20080013424 EP08013424A EP2050517B1 EP 2050517 B1 EP2050517 B1 EP 2050517B1 EP 20080013424 EP20080013424 EP 20080013424 EP 08013424 A EP08013424 A EP 08013424A EP 2050517 B1 EP2050517 B1 EP 2050517B1
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- grain size
- accordance
- aggregate
- urea
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 48
- 239000000463 material Substances 0.000 title claims description 38
- 238000000034 method Methods 0.000 title claims description 30
- 239000002689 soil Substances 0.000 title claims description 23
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 10
- 239000011707 mineral Substances 0.000 title claims description 10
- 239000013049 sediment Substances 0.000 title description 28
- 238000012545 processing Methods 0.000 title description 3
- 239000004566 building material Substances 0.000 claims description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 17
- 239000004202 carbamide Substances 0.000 claims description 17
- 239000004927 clay Substances 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 229910052622 kaolinite Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000011044 quartzite Substances 0.000 claims description 2
- 239000003786 aquatic sediment Substances 0.000 claims 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 235000013339 cereals Nutrition 0.000 description 30
- 238000010276 construction Methods 0.000 description 7
- 239000007858 starting material Substances 0.000 description 7
- 235000013312 flour Nutrition 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000002734 clay mineral Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000012432 intermediate storage Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- CYPPCCJJKNISFK-UHFFFAOYSA-J kaolinite Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[O-][Si](=O)O[Si]([O-])=O CYPPCCJJKNISFK-UHFFFAOYSA-J 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
- C04B14/361—Soil, e.g. laterite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- the invention relates to a method for treating contaminated mineral water sediment or soil material to a mineral building material for earth engineering purposes, which can be used above or below the water level.
- Soils or water sediments which are often referred to as silt, as incurred in particular in dredging in docks, fairways and the like, may be contaminated by pollutants, which are mostly complexed heavy metal ions and / or other often extremely harmful organic compounds of the most varied chemical nature. This has the consequence that you can not land dumps or the like accumulating soil or water sediments under dumping, as was customary in the past and still occurs to no inconsiderable extent, since the pollutants contained in the course of time by leaching into the groundwater and this can burden.
- the DE 199 36 324 A1 discloses the use of urea as a filler to treat mineral contaminated masses.
- the present invention is therefore based on the object to provide a method by which contaminated soils or water sediments can be processed to a mineral building material, which can be used for civil engineering purposes above or below the water level, d. H. can be used both above and below water, and has sufficient mechanical strength.
- organophilic bentonite in particular impurities are bound by hydrocarbons.
- Urea binds especially heavy metals like copper and zinc.
- highly contaminated starting materials can be immobilized.
- the binder causes a stabilization of the material, so that a sustainable building material with sealing and bearing properties is created.
- the rock granules have a particle size distribution which is within a grading belt with the following mass fractions: 0% to 1% to 2 mm Grain size; 0% to 12% to 3 mm grain size; 0% to 35% to 4 mm grain size; 0% to 90% to 5 mm grain size; 0 to 96% to 6 mm grain size; 0.5% to 97% to 8 mm grain size; 5% to 100% to 10 mm grain size; 95% to 100% to 16 mm grain size; 99% to 100% to 20 mm grain size.
- the aggregate may contain round grain and / or crushed grain and / or recycled material.
- Fig. 2 shows corresponding grading curves (curves 3, 4).
- the aggregate is graded and contains 90-95 wt .-% grain size 2/8 mm and 5-10 wt .-% grain size 8/16 mm.
- the term "grain size 2/8" is understood to mean, in particular, a material whose grain size is between 2 and 8 mm, the proportion of undersize being at most 5% by weight and the proportion of oversize being at most 10% by weight. Accordingly, for the indication "grain size 8/16 mm" a grain size between 8 and 16 mm with a proportion of undersize of a maximum of 5 wt .-% and a proportion of oversize of a maximum of 10 wt.%.
- Fig. 2 shows corresponding grading curves (curves 3, 4).
- the addition of aggregate to the reprocessed sediment or soil material has the purpose of achieving in the blended processed material a certain particle size distribution which is within a given grading curve as defined in claim 1, since the building material will only have the desired mechanical properties Properties (strength, trafficability) receives.
- the water sediment or soil material usually has a relatively fine particle size distribution (sludge grain), the desired particle size distribution by adding sand grain and possibly gravel can be achieved.
- the clay flour which may be 10 to 75% kaolinite and 5 to 25% quartzite
- it has been found that it is advantageously non-swelling, and this natural property imparts crystal chemical stability and geochemical resistance to the fine-grained kaolinite. Due to the non-existent possibility of intracrystalline swelling can therefore take place no ion diffusion.
- the starting material with 2% clay, 0.2% organophilic bentonite, 2% urea, 25% hydraulic binder and 25% aggregate is mixed.
- the soils or water sediments contain a maximum of 50 wt .-% sand.
- a use of an at least largely carbonate-free kaolinitician clay flour in one embodiment of the invention, a use of an at least largely carbonate-free kaolinitica clay flour.
- a clay powder with a fineness of up to about 1.5 mm is used, wherein preferably at least a grain content of about 70% to 0.002 mm size is present, that is a very considerable very fine grain fraction.
- the water bed sediments are aerated before mixing, preferably during comminution.
- the added hydraulic binder may consist of 95-100% Portland cement clinker.
- clay mineral + binder Ca clay mineral + new formation.
- the resulting reaction product is a complex composite of clay minerals (derived from the primary water sediment and clay additive), newly formed hydrated Ca / Al silicates, metal hydroxides and organic complexes, and is inherently chemically stable when the water supply is limited or completely inhibited ,
- urea in particular achieves a binding effect of Cu and Zn, with the carbon contained in the harmful organic components of the water sediments entering into certain chemical compounds with the urea, which lead to binding of the pollutants and to further solidification.
- the urea can have an amide nitrogen content of 40-50%, in particular of 46%.
- urea granules can be used, it is expedient to use prilled urea, which due to its fineness mixes quickly and evenly with the dried water sediment. It can be provided that the urea has a maximum biuret content of 1.2%.
- the starting material is processed to a mineral building material for earth engineering purposes for use either below or above the water level, d. H.
- the material processed according to the invention can be used in particular also under water.
- the material can be used as a building material for underwater fillings, e.g. for use in docks for the production of industrial areas, or over water, as a dike-building or sealing construction or for temporary flood protection. Further areas of use are as a roadbed load-bearing construction, as non-load-bearing filling in road construction, for soil replacement or as a surface and base seal in the landfill area.
- the invention further relates to a building material for geotechnical purposes, prepared by the method according to the invention and with the specified particle size distribution.
- the odors or soils 3 dredged from a body of water 1 such as, for example, a harbor basin, a fairway or the like, by means of a (bucket chain) excavator 2 or the like, are first of all fed to a dry field 4 in a suitable manner and are naturally (especially by evaporation) to a water content (based on the dry weight of the sediment 3) of about 50 - 70% brought.
- a shredder 5 which is provided with (at least) a shaft 6 indicated in the drawing only by a dot-dash line on which are arranged knife-like comminution elements 7 which convey the dewatered water bed sediments 3 (FIG. pre-), while (pre-) homogenizing and aerating at the same time.
- the dewatered, crushed, aerated and thus also homogenized reprocessed starting material then passes by means of a conveyor 8 to a weighing device 9, in which it is in view of the continuously desired treatment operation to a belt scale or the like. is, and is supported by the weighing device 9 in a twin-shaft compulsory mixer 10.
- kaolinitic clay flour in the illustrated embodiment, 2% kaoliniticians Tonmehl (based on the dry matter of the water sediments), this amount, which may be between 2 and 10%, in the present case sufficient because the water sediments have been relatively heavily dehydrated, so that the water content is about 50%.
- control unit 11 controls an outlet 15a of a reservoir 15, in which hydraulic binder is, the water sediment 3 in the mixer 10 - as a kind of "starter” for the immediate acquisition of sufficient material strength after preparation - 25% binder (based on the weight of the sediment dry mass) is added.
- the control unit 11 is further connected to an outlet 17a of a reservoir 17 in functional connection, in which organophilic bentonite is located, and with an outlet 19a of a reservoir 19, in which granulated or prilled urea, which the reprocessed water sediments 3 and the kaolinitica clay flour and Controlled or metered added to the binder, depending on the nature of the reprocessed material on the one hand and its intended purpose on the other hand in an amount between about 0.1 to 0.5% and 1 to 5% (again based on the dry weight of the water sediments ).
- the kaolinitsche Tonmehl metered from the reservoir 13 to the reprocessed water sediment 3 at a grinding fineness to about 1.5 mm contains about 70% grain fraction in the range to 0.002 mm.
- the aggregate further to be added to the raw material to be processed is supplied to the mixer 10 from a further storage container 20 and a metering and conveying device 21 controlled by the control unit 11.
- the aggregate to be added may have a particle size distribution ("grading curve") within a wide range, so that the result is a particle size distribution according to the invention, as defined in claim 1.
- Fig. 2 shows with curve 2 an exemplary particle size distribution, as it is obtained as a result of treatment in the building material after mixing the reprocessed water or soil material with a specific aggregate.
- the aggregate to be added can consist of a mixture of aggregates with different largest grains.
- Fig. 2 For such a case, as an example, the addition of about 25% by weight (based on the dry weight of the material being processed) of aggregate mixed from 5 to 10% of a 16 mm aggregate aggregate grain (curve 4) and 90 to 95% of an aggregate Aggregate with maximum grain size 8 mm (curve 3), to a sediment or soil material with the shown relatively fine-grained composition (curve 1). After the mixture, a building material is obtained with the illustrated grain line (curve 2), which lies approximately in the middle of the range of possible particle size distributions covered by the invention as it is described in US Pat Fig. 3 is illustrated, and gives the building material the desired mechanical properties.
- curve 2 the illustrated grain line
- Fig. 3 shows approximately the grain size distribution range within which the building material according to the invention can lie, namely approximately between the illustrated grading lines A and B.
- the essentially finished material which is homogenized by another shredder 23, passes through a conveyor 18 to an intermediate storage location 24, where it is stored for one day protected from the weather and then reused as building material.
- the reprocessing process does not have to be carried out continuously. Rather, it may even be expedient to perform it discontinuously, in particular with regard to the desired intimate and homogeneous Mixing of the individual material components in the mixer 10 and the subsequent required emptying.
- the bottom 27 of the substantially cylindrical mixer housing 28 can be opened over an arc angle of 120 °, so that compared to known twin-shaft compulsory mixers results in an approximately four times as large outlet and easy emptying is possible. Possible inhomogeneities are eliminated by the downstream shredder 23.
- a silicate such as in particular industrial precipitated silica can be added as a "starter”, and expediently also in the mixer 10, preferably in discontinuous operation, in order to produce a very homogeneous mixture.
- the manufactured building material can be processed over a long period of time.
- the material can thus be continuously produced, stored and processed at any time.
- the material can be used as a building material for fillings above or below water, for load-bearing and / or sealing construction in dike construction, for load-bearing structures in the road substructure, as filling, non-load bearing, in road construction, as soil replacement or surface and base seals for landfill construction.
- the building material according to the invention remains permanently processable and can be installed and removed and reused.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Claims (19)
- Procédé de préparation d'un sédiment aquatique minéral contaminé - ou d'un matériau de sol (3) afin de former un matériau de construction minéral pour des objectifs de travail de la terre et d'ingénierie du sol, où le matériau est essoré jusqu'à une teneur en eau ne dépassant pas 50 à 70% de son poids sec et réduit en poudre de façon homogène, et le matériau réduit en poudre résultant est mélangé de façon homogène (10) avec, en termes de son poids sec, 2 à 10% d'argile en poudre, d'urée et 2 à 30% de liant hydraulique et d'agrégat, caractérisé en ce que 0,1 à 0,5% de bentonite organophile et d'urée sont également ajoutés selon une concentration de 1 à 5% et que le matériau du bâtiment a une distribution granulométrique qui se situe dans la plage de la courbe granulométrique avec les fractions massiques suivantes : 0,5% à 26% jusqu'à une granulométrie de 0,002 mm maxi. ; 0,7% à 26% jusqu'à une granulométrie de 0,006 mm maxi. ; 0,9% à 27% jusqu'à une granulométrie de 0,02 mm maxi. ; 1% à 28% jusqu'à une granulométrie de 0,06 mm maxi ; 4% à 40% jusqu'à une granulométrie de 0,2 mm maxi. ; 6% à 60% jusqu'à une granulométrie de 0,6 mm maxi ; 15% à 75% jusqu'à une granulométrie de 1 mm maxi. ; 25% à 100% jusqu'à une granulométries de 2 mm maxi. ; 40% à 100% jusqu'à une granulométrie de 4 mm maxi. ; 45% à 100% jusqu'à une granulométrie de 6 mm maxi. ; 55% à 100% up to 10 mm grain size; 75% to 100% up to 20 mm grain size; 90% to 100% jusqu'à une granulométrie de 40 mm maxi. ; 98% à 100% jusqu'à une granulométrie de 60 mm maxi.
- Procédé selon la Revendication 1, caractérisé en ce que 20 à 40 % en poids de l'agrégat sont ajoutés.
- Procédé selon la Revendication 1 ou la Revendication 2, caractérisé en ce que l'agrégat a une distribution granulométrique qui se situe dans une plage de courbe granulométrique ayant les fractions massiques suivantes : 0% à 1% jusqu'à une granulométrie de 2 mm maxi. ; 0% à 12% jusqu'à une granulométrie de 3 mm maxi. ; 0% à 35% jusqu'à une granulométrie de 4 mm maxi. ; 0% à 90% jusqu'à une granulométrie de 5 mm maxi. ; 0% à 96% jusqu'à une granulométrie de 6 mm maxi. ; 0,5% à 97% jusqu'à une granulométrie de 8 mm maxi ; 5% à 100% jusqu'à une granulométrie de 10 mm maxi. ; 95% à 100% jusqu'à une granulométrie de 16 mm maxi. ; 99% à 100% jusqu'à une granulométrie de 20 mm maxi.
- Procédé selon la Revendication 1, caractérisé en ce que l'agrégat contient des grains ronds, de la roche concassée ou un matériau de recyclage.
- Procédé selon la Revendication 1 ou la Revendication 2, caractérisé en ce que l'agrégat est classé et contient 90 à 95% d'une granulométrie de 2/8 mm et 5 à 10% d'une granulométrie de 8/16 mm.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau est mélangé avec 2% d'argile en poudre, 0,2% de bentonite organophile, 2% d'urée, 25% de liant hydraulique et 25% d'agrégat.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les sédiiments aquatiques sont travaillés avec une proportion de sable ne dépassant pas 50 % en poids.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau est aéré et homogénéisé avant et après le mélange.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'argile en poudre est constituée de 10 à 75% de kaolinite et de 5 à 25% de quartzite.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'argile en poudre possède une finesse de broyage de jusqu'à environ 1,5 mm.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé par l'utilisation d'argile en poudre dans laquelle pas moins d'environ 70% de la teneur en grain a une distribution granulométrique de jusqu'à 0,002 mm.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, dans les cas où il doit être déployé sous de l'eau, le mélange résultant est, avant tout travail supplémentaire en tant que matériau de construction, placé sous l'eau dans moins de six heures de son mélange.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau préparé est utilisé pour remplir de l'eau sous-marine au moyen de bennes preneuses.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le liant hydraulique renferme 95 à 100 % en poids de clinker de ciment Portland.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'urée a une teneur en azote amide de 40 à 50% et notamment de 46%.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'urée est ajoutée en tant que granulé ou est grelonée.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'urée a une teneur en biuret ne dépassant pas 1,2%.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau est travaillé afin de former un matériau de construction minéral pour des objectifs de travail de la terre et d'ingénierie du sol en-dessous ou au-dessus de la nappe phréatique.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau résultant est utilisé en tant que matériau de construction pour un remplissage en-dessous ou au-dessus de l'eau, pour des éléments porteurs de charge ou de scellage dans les structures de digues, pour des structures porteuses de charges dans les fondations de chaussées ou pour le remplacement du sol.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200830766T SI2050517T1 (sl) | 2007-07-26 | 2008-07-25 | Postopek za predelavo kontaminiranega mineralnega materiala vodnih sedimentov ali talnega materiala |
PL08013424T PL2050517T3 (pl) | 2007-07-26 | 2008-07-25 | Sposób oczyszczania zanieczyszczonych materiałów z mineralnych osadów wodnych lub materiałów gruntowych |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710035054 DE102007035054B3 (de) | 2007-07-26 | 2007-07-26 | Verfahren zum Aufbereiten von kontaminiertem mineralischen Gewässersediment- oder Bodenmaterial |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2050517A2 EP2050517A2 (fr) | 2009-04-22 |
EP2050517A3 EP2050517A3 (fr) | 2011-05-25 |
EP2050517B1 true EP2050517B1 (fr) | 2012-06-20 |
Family
ID=39670384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080013424 Active EP2050517B1 (fr) | 2007-07-26 | 2008-07-25 | Procédé de traitement de matériau de sédiment d'eau ou de sol minéral contaminé |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP2050517B1 (fr) |
DE (1) | DE102007035054B3 (fr) |
DK (1) | DK2050517T3 (fr) |
ES (1) | ES2394165T3 (fr) |
HR (1) | HRP20120736T1 (fr) |
PL (1) | PL2050517T3 (fr) |
PT (1) | PT2050517E (fr) |
SI (1) | SI2050517T1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3008006B1 (fr) | 2013-07-03 | 2017-02-24 | Philippe Vieville | Procede et installation de traitement de boues, notamment de boues portuaires |
CN107021699A (zh) * | 2017-04-13 | 2017-08-08 | 越艳 | 含有建筑垃圾砖瓦类细骨料的预拌砂浆及其制备方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3732961A1 (de) * | 1987-09-30 | 1989-04-13 | Kreyenberg Heiner | Verwendung der feinfraktion von gewaessersedimenten |
DE4105707A1 (de) * | 1991-02-20 | 1992-08-27 | Hegemann Detlef Gmbh & Co | Verfahren und einrichtung zum aufbereiten von kontaminierten gewaessersedimenten |
CA2154532C (fr) * | 1995-07-24 | 2004-06-29 | Jeffrey P. Newton | Methode de traitement pour sols contamines |
DE19936324A1 (de) * | 1999-08-02 | 2001-02-22 | Geodur Cis Ag Zug | Gemisch zur Behandlung von Abfallmaterial |
DE10160130A1 (de) * | 2001-12-08 | 2003-06-26 | Wolfgang Schwetlick | Gewinnung von Schwermetallen aus Rückständen und Abfall |
-
2007
- 2007-07-26 DE DE200710035054 patent/DE102007035054B3/de not_active Expired - Fee Related
-
2008
- 2008-07-25 SI SI200830766T patent/SI2050517T1/sl unknown
- 2008-07-25 ES ES08013424T patent/ES2394165T3/es active Active
- 2008-07-25 EP EP20080013424 patent/EP2050517B1/fr active Active
- 2008-07-25 DK DK08013424T patent/DK2050517T3/da active
- 2008-07-25 PT PT08013424T patent/PT2050517E/pt unknown
- 2008-07-25 PL PL08013424T patent/PL2050517T3/pl unknown
-
2012
- 2012-09-17 HR HRP20120736AT patent/HRP20120736T1/hr unknown
Also Published As
Publication number | Publication date |
---|---|
DE102007035054B3 (de) | 2008-09-04 |
DK2050517T3 (da) | 2012-10-01 |
ES2394165T3 (es) | 2013-01-23 |
PL2050517T3 (pl) | 2013-01-31 |
SI2050517T1 (sl) | 2012-12-31 |
HRP20120736T1 (hr) | 2012-11-30 |
EP2050517A2 (fr) | 2009-04-22 |
PT2050517E (pt) | 2012-09-24 |
EP2050517A3 (fr) | 2011-05-25 |
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